Charles f



`TO ALL WHOM IT MAY CONCERN:

grams me?. @einer @fina CHARLES F. ESPION, OF PLYMOUTH, AssreNOH TO HIMSELF AND JOSEPH STOUGH AND JOHN STOUGH,` OF MARSHALL COUNTY,- INDIANA.

Letters Patent No. 80,933, dated August 11, 1868.

. IMPROVEMENT IN TUYERE-IRON.

Be it known tht I, OHAnLsF. EsPICK,of Plymouth, in the county of Marshall, and in the Stute of Indiana, have invented certain new and useful Improvements in Tuyere-Iron; and do hereby declare that the following is a, full, clear, and exact description thereof', reference being made tothe accompanyingidrawingls,

'afnrl to the 'letters of reference marked thereon. l

In the annexed drewings, forming part of this specification- Figure 1 represents a. side sectional View of the tuyerc-iron, and

Figure 2 merely afside view of the same. 4 Y

A represents the place where the bellows enter the tuyere-iron; B, the upper perforated plate of the same, through which the air is emitted; C is an'iron plate, the diameter of which islsomewhat larger than that ofthe perforated plate B in the centre ofthe iron. This plate C is moved up and down b y means of the screw D, which runs through the bottom, E, of the iron. This bottom, E, is-connected by a. hinge, F, onthe side of the iron, and fastenedon the other bya, latch, G, so that it can be opened down, for letting ashes, dust, and other mattei", )vhich may drop down through, escape. p p

The object of this improvement is to contract the current of air to a smallspnce in the centre ofthe iron,

that the amount of heat and fire ruay'be'regulated, `as'the case may require, by means of the `screw l), the ire'f being' increased by turning the screw down, andadmitting the heat to the'entire surface of the perforated plate B. I am aware that a. tuyere-ron, hai/ing ia. perIOra'tedplote with an interior demper for regulating theheat, is not'I new. L l i I What I claim, is-` The arrangement of t-he screw D, plate C, andhinged bottom E, with the tuyere-box, constructed and operating as set forth.

i In testimony that I claim the fore-going, heile hereunto setv my hand, this 31st day of Merch, 1868.

` CHARLESF. ESPICK.

Witnesses: Y

H. E. LONG, SIMONs STOUGH. 

